B Troubleshooting

B.1 Error Messages after Start-Up

Problem

After configuration, the Oracle Sensor Edge Server displays error messages while starting up, such as:

End tag does not match start tag 'ParameterInst'

or

No such field oracle.edge.jmx.model.DispatcherInstanceImpl.ParameterInst

Solution

An invalid XML document might cause this error. Check if the edgeserver.xml file is well-formed by opening the edgeserver.xml file with an XML editor or with Internet Explorer. In addition, check whether the reference values point to the correct ids and verify that all id values in the edgeserver.xml are unique.

B.2 Tag Reads Are Not Dispatched to the Back-End

Problem

The Oracle Sensor Edge Server starts properly, but the tag reads are not dispatched to the back-end.

Solution

Check the log file for any problems in starting the device.

B.3 Exceptions Thrown When Stopping the Oracle Sensor Edge Server

Problem

Exceptions are thrown when I stop the Oracle Sensor Edge Server.

Solution

Improper shut-down of the device controller might cause exceptions to be thrown. Stop the Oracle Sensor Edge Server before the device controller.

B.4 Additional Information About the Oracle Sensor Edge Server

Problem

I need additional information about the Oracle Sensor Edge Server. Where can I find more information and access the downloads? Is there a Web site specific to the Oracle Sensor Edge Server?

Solution

Oracle Technology Network (http://www.oracle.com/technology/) provides the lastest filters, drivers, and the Edge Development Kit for developing extensions to the Oracle Sensor Edge Server, as well as information and tutorials.

B.5 Installation Requirements

The Oracle Edge Sensor Server requires JDK 1.4.x and free ports.